ARM ARM7TDMI Datasheet download pdf (Page 13)

Introduction

ARM7TDMI Data Sheet

ARM DDI 0029E

1-5

Open Access

1.4 ARM7TDMI Core Diagram

Figure 1-2: ARM7TDMI core

nRESET

nMREQ

SEQ

ABORT

nIRQ

nFIQ

nRW

LOCK

nCPI

CPA

CPB

nWAIT

MCLK

nOPC

nTRANS

Instruction

Decoder

&

Control

Logic

Instruction Pipeline

& Read Data Register

DBE

D[31:0]

32-bit ALU

Barrel

Shifter

Address

Incrementer

Address Register

Register Bank

(31 x 32-bit registers)

(6 status registers)

A[31:0]

ALE

Multiplier

ABE

Write Data Register

nM[4:0]

32 x 8

nENOUT

nENIN

TBE

Scan

Control

BREAKPTI

DBGRQI

nEXEC

DBGACK

ECLK

ISYNC

B

b

u

s

A

L

U

b

u

s

A

b

u

s

P

C

b

u

s

I

n

c

r

e

m

e

n

t

e

r

b

u

s

APE

BL[3:0]

MAS[1:0]

TBIT

HIGHZ

& Thumb Instruction Decoder

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 41 42

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